Canon EOS R7 vs Canon EOS 1Ds Mark III

This is a full comparison between the cameras Canon EOS R7 and Canon EOS 1Ds Mark III. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Canon.

Type of camera

Canon EOS R7 is a Mirrorless camera while Canon EOS 1Ds Mark III is a DSLR camera. More information about their differences will come soon.

Sensors / crop factor

These cameras have different sensors. Canon EOS R7 has a "Canon APS-C"-sensor while Canon EOS 1Ds Mark III has a "Canon Full Frame"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Canon)

Resolution

Canon EOS R7 has a 33 MP (Megapixels) resolution while Canon EOS 1Ds Mark III has 21,1 MP. If we break down this in more detail this is the data behind the numbers:

Canon EOS R7 has a 54 % larger resolution than Canon EOS 1Ds Mark III. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Canon EOS R7 has a larger ISO-range than Canon EOS 1Ds Mark III. Canon EOS R7 has an ISO range that stretches from 100 to 32000 while Canon EOS 1Ds Mark III has 50 to 3200.

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

Worth mentioning is that Canon EOS R7 belongs to the Canon EOS R-system and needs an adapter to work with Canons EF, EF-S, MP-E, and TS-E lenses. You can read more about this adapter here:
Canon Lens Mount Adapter EF-EOS R

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Canon EOS R7
Lens compatibility chart for Canon EOS 1Ds Mark III

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS R7 can shoot up to 15 pictures per seconds and Canon EOS 1Ds Mark III can shoot up to 5 pictures per seconds.

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

When comparing these two cameras there is only one of them that can shoot movies and that is Canon EOS R7. Unfortunately Canon EOS 1Ds Mark III does not support recording movies and movie clips.

Weight

The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Canon EOS 1Ds Mark III weighs 1385 gr (equal to 3.05 lb) which is 126% heavier than Canon EOS R7 and its 612 gr (or 1.35 lb).

Canon EOS R7 vs Canon EOS 1Ds Mark III Specs

Below you will find the complete and detailed technical specs for both Canon EOS R7 and Canon EOS 1Ds Mark III, next to each other. Each category of data is a link to an article covering the subject, giving you a deeper understanding so you can better understand the strengths and weaknesses of the two camera models.

Product	Canon EOS R7	Canon EOS 1Ds Mark III
Name	Canon EOS R7	Canon EOS 1Ds Mark III
Manufacturer	Canon	Canon
Release Date and Price	Canon EOS R7	Canon EOS 1Ds Mark III
Release Year	2022	2007
Release Date	2022-05-24	2007-08-20
MSRP	1499 USD	6999 USD
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Camera Type	Canon EOS R7	Canon EOS 1Ds Mark III
Camera Type	Mirrorless	DSLR
Sensor	Canon EOS R7	Canon EOS 1Ds Mark III
Sensor Size	APS-C (approx 22.3 x 14.9 mm)	Full Frame (approx 36 x 24 mm)
Sensor Type	CMOS	CMOS
Resolution	6960 x 4640 pixels	5616 x 3744 pixels
Megapixels	33 MP	21,1 MP
Image Processor	DIGIC X	DUAL DIGIC 3
Image	Canon EOS R7	Canon EOS 1Ds Mark III
ISO Range	100 - 32000	50 - 3200
White Balance Presets	6	8
Custom White Balance	Yes	Yes
Image Stabilization	Yes (Sensor-Shift)	No
Image Stabilization CIPA Rating	0 stops	0 stops
Uncompressed format	RAW	RAW
Optics & Focus	Canon EOS R7	Canon EOS 1Ds Mark III
Autofocus Motor	Yes	Yes
Autofocus	Phase Detect Multi Area Center Selective Single Point Tracking Single Continuous Touch Face Detection LiveView	Phase Detect Multi Area Selective Single Point Single Continuous
Focus Points	651	45
Lens Mount	Canon RF See Compatible Lenses	Canon EF See Compatible Lenses
Focal Length Multiplier	APS-C Sensor 1.6x multiplier Example: 24 mm becomes 38 mm 50 mm becomes 80 mm 100 mm becomes 160 mm 200 mm becomes 320 mm	Full frame No multiplier Example: 24 mm remains 24 mm 50 mm remains 50 mm 100 mm remains 100 mm 200 mm remains 200 mm
Screen & Viewfinder	Canon EOS R7	Canon EOS 1Ds Mark III
Articulated LCD	Fully articulated	Fixed
Screen size	3”	3”
Screen dots	N/A	230000
Touch screen	Yes	No
Screen type	N/A	N/A
Live view	Yes	Yes
Viewfinder Type	Electronic	Optical (pentaprism)
Viewfinder Coverage	100%	100%
Viewfinder Magnification	1.15×	0.76×
Viewfinder Resolution	2360000	N/A
Photography features	Canon EOS R7	Canon EOS 1Ds Mark III
Frames per second	15 fps	5 fps
Minimum Shutter Speed	30 seconds	30 seconds
Maximum Shutter Speed	1/8000 seconds	1/8000 seconds
Built-in Flash	No	No
Built-in Flash Range	N/A	N/A
External Flash	Yes	Yes
Self-Timer	Yes	Yes
Time-lapse	No	Yes
Metering modes	Multi Center Weighted Spot Partial	Multi Center Weighted Spot Partial
Exposure Compensation	+/- 3 (at 1/3 EV, 1/2 EV steps)	+/- 3 (at 1/3 EV, 1/2 EV steps)
Videography features	Canon EOS R7	Canon EOS 1Ds Mark III
Video recording	Yes	No
Video format	MPEG4 H.264 H.265	N/A
Video resolution	1920 x 1080 3840 x 2160	N/A
Built-in Microphone	Yes	No
Built-in Speakers	Yes	No
Storage	Canon EOS R7	Canon EOS 1Ds Mark III
Memory Card	SD/SDHC	Compact Flash SD/SDHC
Connectivity	Canon EOS R7	Canon EOS 1Ds Mark III
HDMI Output	Yes	No
Microphone Port	Yes	No
Headphone Port	Yes	No
Wireless	Yes Built-in (Wireless LAN (IEEE802.11b/g/n) (2.4 GHz), with Bluetooth 4.2)	Yes Optional with WFT-E2 II
Remote Control	Yes (Wired, wireless or IR)	Yes (N3 connector)
GPS	Yes Optional via GPS Receiver GP-E2	No
Body & Dimensions	Canon EOS R7	Canon EOS 1Ds Mark III
Enviromentally sealed	Yes	Yes
Battery	Battery Pack	Battery Pack
Battery Details	Rechargeable Li-ion Battery LP-E6NH	Canon LP-E4N Battery Pack
Battery Life (CIPA)	660 shots	1800 shots
Width	132 mm	150 mm
Height	90 mm	160 mm
Depth	92 mm	80 mm
Weight	612 gram	1385 gram